16-letter words containing h, e, i
- ovshinsky effect — an effect that turns special types of glassy, thin films into semiconductors upon application of low voltage.
- packet switching — a method of efficient data transmission whereby the initial message is broken into relatively small units, or packets, that are routed independently and subsequently reassembled.
- packet-switching — a method of efficient data transmission whereby the initial message is broken into relatively small units, or packets, that are routed independently and subsequently reassembled.
- pain in the neck — source of annoyance
- palaeolithic man — any of various primitive types of man, such as Neanderthal man and Java man, who lived in the Palaeolithic
- pantothenic acid — a hydroxy acid, C 9 H 1 7 O 5 N, found in plant and animal tissues, rice, bran, etc., that is part of the B complex of vitamins and is essential for cell growth.
- para-nitrophenol — any compound derived from phenol by the replacement of one or more of its ring hydrogen atoms by the nitro group.
- para-phenetidine — a colorless organic liquid, C 8 H 1 1 NO, used chiefly in its para form (para-phenetidine) in the synthesis of phenacetin, dyes, and other compounds.
- parachute rigger — a person who inspects, repairs, and packs or folds parachutes.
- parliament hinge — a butt hinge the knuckle of which protrudes from the door so that the door when fully opened stands away from the wall.
- particle physics — the branch of physics that deals with the properties and behavior of elementary particles.
- pathetic fallacy — the endowment of nature, inanimate objects, etc., with human traits and feelings, as in the smiling skies; the angry sea.
- pattern matching — 1. A function is defined to take arguments of a particular type, form or value. When applying the function to its actual arguments it is necessary to match the type, form or value of the actual arguments against the formal arguments in some definition. For example, the function length [] = 0 length (x:xs) = 1 + length xs uses pattern matching in its argument to distinguish a null list from a non-null one. There are well known algorithm for translating pattern matching into conditional expressions such as "if" or "case". E.g. the above function could be transformed to 2. Descriptive of a type of language or utility such as awk or Perl which is suited to searching for strings or patterns in input data, usually using some kind of regular expression.
- peano arithmetic — (mathematics) Giuseppe Peano's system for representing natural numbers inductively using only two symbols, "0" (zero) and "S" (successor). This system could be expressed as a recursive data type with the following Haskell definition: data Peano = Zero | Succ Peano The number three, usually written "SSS0", would be Succ (Succ (Succ Zero)). Addition of Peano numbers can be expressed as a simple syntactic transformation: plus Zero n = n plus (Succ m) n = Succ (plus m n) (1995-03-28)
- pearly razorfish — See under razorfish.
- pencil sharpener — tool for sharpening pencils to a point
- pentothal sodium — thiopental sodium
- personal hygiene — bodily cleanliness
- peruvian rhatany — See under rhatany (def 1).
- peter the hermit — c1050–1115, French monk: preacher of the first Crusade 1095–99.
- phagocytic index — the average number of bacteria ingested per phagocyte in an incubated mixture of bacteria, phagocytes, and blood serum: used in determining the opsonic index.
- phalansterianism — a system by which society would be reorganized into units comprising their own social and industrial elements; Fourierism.
- pharmacogenetics — the branch of pharmacology that examines the relation of genetic factors to variations in response to drugs.
- pharmacogenomics — the study of human genetic variability in relation to drug action and its application to medical treatment
- pharmacokinetics — the branch of pharmacology that studies the fate of pharmacological substances in the body, as their absorption, distribution, metabolism, and elimination.
- phase difference — the difference between two sinusoidally varying quantities that have the same frequency, measured either as an angle or a time
- phase microscope — a microscope that utilizes the phase differences of light rays transmitted by different portions of an object to create an image in which the details of the object are distinct despite their near-uniformity of refractive index.
- phase modulation — radio transmission in which the carrier wave is modulated by changing its phase to transmit the amplitude and pitch of the signal.
- phenomenological — the study of phenomena.
- phenoxybenzamine — an alpha blocker, C 1 8 H 2 2 ClNO, used to dilate vascular peripheral blood vessels in the treatment of Raynaud's disease and in pheochromocytoma.
- phenylethylamine — an amine that occurs naturally as a neurotransmitter in the brain, has properties similar to those of amphetamine, is an antidepressant, and is found in chocolate. Formula: C8H11N
- philip r. bagley — (person) A pioneer of computer document retrieval. See metadata.
- phillis wheatley — Phillis [fil-is] /ˈfɪl ɪs/ (Show IPA), 1753?–84, American poet, born in Africa; probably Senegal.
- philoprogenitive — producing offspring, especially abundantly; prolific.
- philosopher king — the Platonic ideal of a ruler, philosophically trained and enlightened.
- philosopher-king — the Platonic ideal of a ruler, philosophically trained and enlightened.
- phlebothrombosis — the presence of a thrombus in a vein.
- phosphor fatigue — screen saver
- photoelectricity — electricity induced by electromagnetic radiation, as in certain processes, as the photoelectric and photovoltaic effects, photoconductivity, and photoionization.
- photoluminescent — luminescence induced by the absorption of infrared radiation, visible light, or ultraviolet radiation.
- photoperiodicity — the response, as affecting growth or reproduction, of an organism to the length of exposure to light in a 24-hour period.
- photopolarimeter — a polarimeter that uses a photocell.
- photorespiration — the oxidation of carbohydrates in many higher plants in which they get oxygen from light and then release carbon dioxide, somewhat different from photosynthesis.
- photosensitivity — the quality of being photosensitive.
- phototypesetting — Printing. photocomposition.
- phylogenetically — the development or evolution of a particular group of organisms.
- physical address — (memory management) The address presented to a computer's main memory in a virtual memory system, in contrast to the virtual address which is the address generated by the CPU. A memory management unit translates virtual addresses into physical addresses.
- physical fitness — good physical condition
- physical science — any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and astronomy.
- physical therapy — the treatment or management of physical disability, malfunction, or pain by exercise, massage, hydrotherapy, etc., without the use of medicines, surgery, or radiation.